Hi, am I correct that ISPs (in RIPE region), who update their BGP prefix filters automatically, ask their IP transit customer or peering partner to provide their "route"/"route6" object(s) or "as-set" object in order to find all the prefixes which they should accept? If the IP transit customer or peering partner provides an "as-set", then ISP needs to ensure that this "as-set" belongs to this IP transit customer or peering partner because there is no automatic authentication for this, i.e. anybody can create an "as-set" object to database with random "members" attributes? This is opposite to "route"/"route6" objects which follow a strict authentication scheme. In addition, in case of "as-set", an ISP needs to recursively find all the AS numbers from "members" attributes because "as-set" can include other "as-sets"? Quite a lot of question, but I would simply like to be sure that I understand this correctly. thanks, Martin